Guardant Health, Inc. (GH) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-05 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Guardant Health, Inc. (GH) CIK: 0001576280 --- Reporting Owner --- Name: Hidalgo Medina Manuel CIK: 0001865525 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-08-05 | Code: M (Exercise of derivative) Shares: +950 | Price: $32.55 Total Value: $30,922.50 Shares Owned After: 6,256 | Ownership: D (Direct) [Transaction #2] Security: Common Stock Date: 2026-08-05 | Code: S (Open market sale) Shares: -950 | Price: $163.94 Total Value: $155,747.75 Shares Owned After: 5,306 | Ownership: D (Direct) [Transaction #3] Security: Common Stock Date: 2026-08-05 | Code: S (Open market sale) Shares: -750 | Price: $164.61 Total Value: $123,453.82 Shares Owned After: 4,556 | Ownership: D (Direct) --- Derivative Transactions --- [Transaction #1] Security: Stock Option (Right to Buy) Date: 2026-08-05 | Code: M (Exercise of derivative) Shares: -950 | Price: $0.00 Exercisable: N/A | Expires: 2034-07-17 Shares Owned After: 12,079 | Ownership: D (Direct) Footnotes: [F1] The stock option granted on July 17, 2024 vests over a four-year period. 25% of the shares subject to such award vested on July 17, 2025 and the remaining 75% vests monthly for the three-year period thereafter. --- Footnotes (Complete Index) --- F1: The stock option granted on July 17, 2024 vests over a four-year period. 25% of the shares subject to such award vested on July 17, 2025 and the remaining 75% vests monthly for the three-year period thereafter. --- Signature --- /s/ /s/ John G. Saia, as attorney-in-fact for Manuel Hidalgo Medina (2026-08-06)